Well, hey there! Thanks for clicking and stuff like that! It's about 9:45 pm and I first wrote this when I was 11, so don't be mad if it's awful!

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Summary- JKR got everything right... almost. There was one person left out, though. And that was the incredibly amazing Matilda Potter (aka Harry's twin sister). Set during PS. Wow, that summary sucks.

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Chapter 1- Whoa... I have a sister?

From behind Hagrid, there came a small coughing noise.

"Oh, o' course. I almost forgot abou' you, Mati," the huge man grumbled. "Jus' a mo... Where was I? Oh, course..." He turned back to the Dursleys. "Harry Potter doesn't even know... anything?"

"I do know some things..." Harry piped up. "Maths and... stuff-"

"I mean about our world. My world. Your world. Your parents' world."

"What world?" Harry asked.

"You really don' know? Next you'll be tellin' me you didn' know ye've got a sister-"Hagrid whispered.

"Whoa... I have a sister?"

"Yeah, you do," said a voice from behind Hagrid. Out stepped a girl about the same age as Harry.

"Matilda Potter. Born 31st July 1980. Only daughter of James and Lily Potter. Twin sister of Harry Potter," she said in one breath.

"You're really my sister?" asked Harry, looking like he was going to faint.

Matilda chuckled, and then became suddenly serious. She lifted her fringe, just enough to show the lightning shaped scar on her forehead.

"That enough proof for you, Harry?"

"Well now," interrupted Hagrid. "Now we're all introduced, I think it's time you two got some sleep. You'll get yer letter in the morning, Harry."

"Hold on!" cried Uncle Vernon, suddenly able to speak again. "If you think I'm paying for some crackpot old fool to teach the boy magic tricks-"

"NEVER INSULT ALBUS DUMBLEDORE IN FRONT O' ME!" roared Hagrid. He picked up his pink umbrella, and pointed it at Dudley. The pig-like boy shot a few feet into the air, and landed again on his face, hands clutching his fat bottom. A curly pig's tail could be seen through his fingers. Harry couldn't help laughing, and even his sister giggled quietly.

"Well then, Harry, I can't say this hasn't been," she glanced at Dudley, "entertaining, but I'm absolutely exhausted. Hagrid, can I borrow your coat?"

"Course, Matilda. Don' worry, Harry. You'll be able to fit under there too. Don' worry if it wriggles a bit. I've still got some mice in one of the pockets, I think."

He dropped the coat onto the floor, and quite promptly fell asleep.

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So, how did it go? Was it a miserable failure? Or was it pretty good? Either way, review. I might do another chapter if I get, say, 7 reviews (Hint, hint). Plus, if you click on the button that says "review this chapter/story", you get free cookies! So go on, click on it!

*Lily*